Us states by zip codes

They may look like this:. Postal delivery routes are determined by optimal efficiency. County lines are rarely considered when determining where USPS mail trucks go.

If you enter into our address validation demo, you will find that the ZIP Code spans five counties. Even still, you may still need to know all the counties in a particular city or ZIP Code. Here is how:. They are both five characters long. They are both composed of numbers exclusively. But, that is where the similarities end. Numbers are assigned alphabetically in ascending order. The first two digits in the five-digit county FIPS Code represent the state in which the county is located.

FIPS codes are assigned in alphabetic order to counties counting by odd numbers. The first county in a state alphabetically is always , the second county is always , the third is and so on.

This method leaves a space between each county for insertion of renamed or newly created counties. All while preserving the alphabetic ordering. The database is too big to include in this article, but we can show you how to download the entire database in a matter of minutes. If a county FIPS Code shows up in the list as one-digit number you will need to add two zeros to the beginning.

Therefore the zip code map shows the codes according to the state and individual color shows that this code is used in that particular area. The zip code map can be saved and printed from the below image for further reference. The United State comprises of 50 states therefore the zip code map is helpful in many other ways such as delivering mail, parcel delivery, therefore the particular state zip codes are helpful in reaching the parcel on time and on the correct address through the help of zip codes.

There are various zones in the United State where the parcels are delivered and the sorting is done overnight and are delivered to the local post offices of that particular area. The below image shows the number 4xxx, 5xxx which defines the zones in the United state and the mails are carried through that particular zone, delivered to the local post office. The US Zip code map is helpful in delivering the mail on time in the State and an efficient process of dealing with the delivery system.

The US Zip code map is available on the site and can be downloaded from the below image. Every state has their own zip code, and has been shown in the below image.

The zip code map is helpful for the public as well for the delivery system. The zip code map can be downloaded with the codes from the below image. The issue is that census blocks almost always split down the middle of the street. ZIP codes rarely do because that would require two postal workers delivering mail to that street - one for each side of the street.

In the example, one mail carrier may deliver to 3 sides of the block via one ZIP code while another mail carrier delivers mail on the other street in a different ZIP code.

When this happens, the Census Bureau will assign the entire block to a single ZCTA in this case, because the census block is the area that is precisely measured. If you are getting very precise usually a matter of meters, not miles , census block boundaries near the edge of a ZIP code almost always split ZIP codes. The statistics provided by the Census Bureau can give insight into the demographics within the ZIP code.

For instance, see our ZIP code rankings. Remember that ZIP codes were made to make mail delivery easier. They weren't made to correspond to existing boundaries such as cities, counties, or even states.

If it is more efficient for a mail carrier to drive across a state line to deliver mail, the ZIP code "boundary" will cross the state lines. ZIP codes don't usually cross state lines, but some do , , and are good examples. The edges of the boundaries commonly overlap. For the purposes of our free zip code database by county downloads, we will commonly list either the most common region for the ZIP code or list multiple regions if several exist in the ZIP code. For cities, the assignment is somewhat more complicated.

The assignment of cities to ZIP codes is more general. The city is usually the name of the main post office. For instance, almost all ZIP codes in St. Louis County in Missouri have a city of Saint Louis when they may be more accurately described as the name of a smaller city where they are located.